Pterotrigonia

Tennessee State Fossil

PterotrigoniaFossil.jpg

Pterotrigonia fossil

Pterotrigonia fossil; photo by Internet Archive Book Images on Flickr (no known copyright restrictions).

Pterotrigonia

Tennessee designated Pterotrigonia (Scabrotrigonia) thoracica as the official state fossil in 1998. Pterotrigonia (Scabrotrigonia) thoracica (nickname: "Ptero") was a cretaceous bivalve; fossils of this creature are found in the Coon Creek Formation of West Tennessee.  Pterotrigonia was a shallow-burrowing suspension feeder that inhabited the ocean floor of West Tennessee 70 million years ago. The fossil shells of Pterotrigonia are abundant and easily recognized by collectors.

Tennessee

Videos

70-75 Million Year Old Fossils Still hold Some Original Color